<template>
  <div id="app">
    <div class="todo-container">
      <div class="todo-wrap">
        <MyHeader @receive="receive"/>
        <MyList :todos="todos" :changeTodo="changeTodo" :deleteTodos="deleteTodos"/>
        <MyFooter :todos="todos" @checkAll="checkAll" @clearTodos="clearTodos"/>
      </div>
    </div>
  </div>
</template>

<script>
import MyHeader from "./components/MyHeader.vue";
import MyList from "./components/MyList.vue";
import MyFooter from "./components/MyFooter.vue";

export default {
  name: "App",
  components: {
    MyHeader,
    MyList,
    MyFooter,
  },
   data(){
    return {
      todos:[
        {id:'001',name:'敲代码',done:true},
        {id:'002',name:'看电影',done:false},
        {id:'003',name:'打游戏',done:true}
      ]
    }
  },
  methods:{
    //添加一个todos
    receive(todoObj){
      console.log(todoObj);
      this.todos.unshift(todoObj)
    },
    //勾选或者取消一个todos
    changeTodo(id){
      this.todos.forEach((todos) =>{
        if(todos.id == id){
          todos.done = !todos.done
        }
      })
    },
    //删除一个todos 思路就是通过id，过滤掉已经选择的id,留下未选择的id
    deleteTodos(id){
      this.todos = this.todos.filter(todo => todo.id != id)
    },
    //全选or全不选
    checkAll(done){
      this.todos.forEach((todo) => {
        todo.done = done
      })
    },
    //清除
    clearTodos(){
      this.todos = this.todos.filter((todo)=>{
        return !todo.done

      })
    }
  }
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}






</style>
